Cooperation between Broadcasting and Mobile Services

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1 Cooperation between Broadcasting and Mobile Services ITU BDT Seminar Kiev - November 2000 Daniel SAUVET-GOICHON TDF France

2 What is it about? Make Terrestrial Broadcasting and Mobile networks work together to provide interactive multimedia services to portable or mobile devices. Why? 2

3 Common objectives Broadcasters and IMT community have common objectives Serve users/customers in a best possible way Enhance existing services Provide attractive new services - multimedia Increase service quality Emphasise importance of mobility and seemlessness Reduce overall cost of production and distribution Establish mass market Ensure access to everyone Spectrum efficiency 3

4 Further reason 3rd generation mobile networks (IMT 2000) will not provide sufficient bit rate, at reasonable cost, to provide some of the multimedia services to mobile users or to large audiences 4

5 Example of constraints UMTS (first version, release 99) 384 Kbps maximal bit rate per user in reduced mobility Simultaneous number of users at 384 Kbps : 4 to 5 per cell UMTS (second version, release 00) Small coverage in fixed reception mode ( Hot Spots ) will offer 2 Mbps Not available before 2005 at best 5

6 What do we get with 384 Kbps? Bit rate examples for a quality allowing long duration watching Display size (Diagonal, cm) of an MPEG4 video program Image frequency (Hz) Image net bit rate (Kb/s) Sound net bit rate (Kb/s) Total net bit rate (Kb/s)

7 DAB and DVB-T offer more Stationary Pedestrian DVB-S GPRS Mobile GSM UMTS DAB DVB-T Bit rate (kb/s)

8 Comparison with fixed systems Stationary PSTN ISDN xdsl DVB-C Pedestrian DVB-S GPRS Mobile GSM UMTS DAB DVB-T Bit rate (kb/s)

9 Is cooperation a trend? Broadcasters defend there UHF spectrum See results of WRC 2000 The Mobile Community is mainly devoted to UMTS Release 99 and 00 development Not really! So, why should we study the question? 9

10 There is perhaps no choice... 10

11 UMTS licences UK Billion $ France RFA Italy (min) which makes the MHz cost about between 0.2 and 1 billion $ 11

12 Broadcasting or X Mobile and The pressure on broadcasters to give up part of the UHF spectrum will increase A way to limit such a pressure might be cooperation between Broadcasting and IMT mobile systems 12

13 Cooperation objective Be able, anywhere, anytime, to select the appropriate combination of networks to provide the desired service at the best cost. It is the network face of TV and Internet convergence towards Multimedia. 13

14 Cooperation is possible Transport protocols are defined (DVB example) : MPEG 2 Broadcasting networks Broadcasters MP3 MPEG4 Internet Services IP Paquets Internet Modes DVB-carousel DVB-encapsulated DVB-streaming 14

15 Cooperation is possible Return protocols are defined (DVB example) : Broadcasters Internet Services Broadcasting networks DVB-NIP (Network Independent Protocol) + DVB-RCG (Return Channel GSM) and others Internet 15

16 Receivers No major difficulty Soon on the market TV (Set Top Boxes) with modem, interactivity engine, MHP, disk storage Portables become «organisers» with larger displays Mobile sets dedicated to Internet arrive Cars integrate more and more electronics, displays

17 Services emerge Mainly around two domains : Interactive TV Traffic and travel 17

18 Interactive TV Interactive TV e-commerce simplified Internet access (On-Digital, Quiero TV) IMT would provide reliable and high-quality mobile return path no dialing (direct access to programme provider) 18

19 Traffic and travel Telephone , SMS Video phone Communication Care maintenance Getting car info Safety reports Plan a route for me Guide me to a place Getting somewhere News Traffic situation Tourism Finance Points of interest Being informed Commerce Having fun Music Watching video Playing games Surfing in internet Feeling comfortable Climate Sound Emergency Shopping Charging toll Parking fees Booking tickets 19

20 So? Networks exist, Receivers are almost here, Services emerge, but nothing is simple 20

21 Problems to overcome Make network cooperation effective Complete protocols Make data, services and servers able to auto adapt to networks Regulatory aspects 21

22 Networks (1) Hand over Network 1 Service available? If yes, frequency? If no??? Frequency? Network 2 Has been specified by DVB in the last version of DVB-T spec. but... 22

23 Hand over difficulty is doubled Mobile networks have their own method DVB-T has standardised its method It was already done for DAB and FM Networks (2) Hand over Is further more complicated by the fact that broadcasting does not know how to make retransmission on reception error 23

24 Networks (3) Network management Broadcasting and Mobile networks have each one their own management and supervision systems These have to be linked to ensure control of the final global service 24

25 Networks (4) Network coverage Coverage of both networks must be coherent This does not imply necessarily that network topologies must be the same...but this would be eased if DVB-T networks become more cellular type Propagation characteristics (echoes, indoor penetration ) may impair such a converging process 25

26 Protocols Network specific protocols exist but Broadcasters are not necessary familiar with mobile protocols use and knowledge Is there a need of additional metaprotocols to aggregate various data needed by cooperative networks and services? Several European projects in this area 26

27 Adapt servers and data (1) High speed links and bridges to be built to connect networks Broadcasters Internet Services Broadcasting networks High speed links and servers Internet 27

28 Adapt servers and data (2) Content formats How can content adapt more or less itself to download on either network and with appropriate quality of service? Route choice How to choose between one network or the other to reach the receiver? 28

29 Regulatory aspects Long term allocation of UHF spectrum In the long term (all digital), how much spectrum is needed by Broadcasting? Prerequisite before ITU replaning of Stockholm 61 frequency plan (2005/2006) TVHD? Can mobile and Broadcasting share spectrum? Possible topic for WRC

30 European research projects DVB Project DTTB Multimedia car platform VALIDATE MCP MEMO MOTIVATE Multi networks hand over and dynamic spectrum management and sharing DRIVE 30

31 DRIVE project 31

32 MCP roadmap October 2000 : MCP Draft Specifications for network integration, services and applications as well as the automotive terminal First milestone : 2002 Hybrid networks with fixed spectrum assignments (e.g. DVB-T/DAB/GSM) and 1 G Car Terminals Second milestone : >2005 Hybrid networks with dynamic spectrum allocation 32

33 Conclusions Possible synergies a) Enhance broadcast systems by IMT return channel b) Enhance IMT by using broadcast channel as a forward channel a) provides an extension of interactive TV to mobiles receivers b) allows IMT systems to reach many people at the same time, with same contents, with excellent service quality 33

34 Post conclusion Do we really need such wide band multimedia services, especially in our cars? Is it a no market, a niche market or a wide market? And thank you for your attention! 34

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